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Environmental Protection Agency (EPA)- Qs And As
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Environmental Protection Agency (EPA)- Qs And As
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Environmental Protection Agency (EPA)- Qs And AsList 6 desirable characteristics of a refrigerant Right Ans - High latent heat
Non Toxic
Non Flammable
Non Corrosive
Chemically stable
Lubricant soluble
Name a Chlorine-free refrigerant Right Ans - HFCs
What type of refrigerant are R-11 and R-12 Right Ans - Halocarbons
Name 3 types of refrigerant compounds and the element components of each
Right Ans - CFCs= chlorofluorocarbons
HCFCs= hydrochlorofluorocarbons
HFCs= hydrofluorocarbons
What is an azeotropic refrigerant Right Ans - They combine and create a
third refrigerant with its own individual characteristics
Which type of refrigerant is the most harmful to the stratospheric ozone
Right Ans - CFCs
Explain how blended refrigerants leak from a system Right Ans - At
different rates because of the individual refrigerant components have
different vapor pressures
Explain how blended refrigerants are charged to a system Right Ans - To
charge by weight into the high side of the system as a liquid
Explain the term "temperature glide" Right Ans - Used to describe a blend
of refrigerants that have a range of boiling points
Explain the term "azeotropic mixture" Right Ans -
How do CFCs and bromine affect the ozone Right Ans - Have caused a
depletion of ozone in the stratosphere
, Name the chemical found in the upper stratosphere that indicates ozone
destruction Right Ans - Chlorine monoxide
What does the ozone layer protect the earth from Right Ans - Ultraviolet
radiation from the sun
What evidence exists showing CFCs in the stratospheric ozone? Right Ans -
HFCs
How many ozone molecules can be destroyed by a single chlorine atom?
Right Ans - 100,000
Name the refrigeration elements that cause ozone depletion Right Ans -
Chlorine and fluorine
Are volcanic eruptions considered contributors to the ozone depletion
problem Right Ans - Yes
What type of problem is stratospheric ozone depletion Right Ans - global
concern
what human health effects can result from increased exposure to UV radiation
Right Ans - increased problems in skin cancer and eye cataracts to a
weakening of the immune system
list three effects ozone depletion can have on the evironment Right Ans -
affecting the growth and reproduction of photoplankton, reducing crop yields
and marine life and increase ground level ozone.
how are CFCs affected by rainfall and/or water Right Ans - CFCs are not
washed out of spheres by rainfall and do NOT dissolve or break down into
components that dissolve in water.
What refrigerants have the lowest ODP? Right Ans - HFC-134a/CO2
explain the Montreal protocol agreement Right Ans - a treaty among
nations
what refrigerant compounds did the agreement control Right Ans - CFCs
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